无法让Golang在Ubuntu中工作

Question

Ok, So I've downloaded Go 1.1 and put it into $HOME/Documents/go.

Then, I've modified my .bashrc to be:

export GOPATH=$HOME/Documents/go                                                
export GOROOT=$GOPATH
export GOARCH=amd64
export GOOS=linux
export GOBIN=$GOPATH/bin
export PATH=$PATH:$GOBIN

Than I've sourced the .bashrc, and tried:

jan@janpc:~$ go version
go version go1.1 linux/amd64

But I can't get it to compile or install any dependencies. Eg. I try to run my little test program:

jan@janpc:~/Documents/go/src/github.com/jan/scrypt$ go run scrypt.go 
warning: GOPATH set to GOROOT (/home/jan/Documents/go) has no effect
scrypt.go:9:3: cannot find package "github.com/dchest/scrypt" in any of:
    /home/jan/Documents/go/src/pkg/github.com/dchest/scrypt (from $GOROOT)
    ($GOPATH not set)
jan@janpc:~/Documents/go/src/github.com/jan/scrypt$ 

And when I try to install dependencies:

jan@janpc:~/Documents/go/src/github.com/jan/scrypt$ go get "github.com/dchest/scrypt"
warning: GOPATH set to GOROOT (/home/jan/Documents/go) has no effect
package github.com/dchest/scrypt: cannot download, $GOPATH must not be set to $GOROOT. For more details see: go help gopath

It compiles and works fine on mac. I can't figure out whats wrong with my config, if I try to remove $GOROOT or $GOPATH nothing works, and I don't know what else to set them to, other than the path to Go.

EDIT: There is no $GOROOT set on my mac. But if I remove $GOROOT on ubuntu, I get bunch of errors like these when I try to compile.

cannot find package "fmt" in any of:
    /usr/local/go/src/pkg/fmt (from $GOROOT)
    /home/jan/Documents/go/src/fmt (from $GOPATH)

Answer 1

Your enviroment variable you've set by

$ export GOROOT=$GOPATH

is a mistake. Nowhere is such setting required nor recommended. Actually, it cripples the environment seen by the Go build system.

Remove that setting, recreate your environment (. bashrc) or open a new terminal and it should work (if no other problems exists).

Additionally, if you're not cross compiling, I recommend to remove also these:

export GOARCH=amd64
export GOOS=linux

In short, proper exported GOPATH is the only environment variable which is, in the first approximation, really needed. Some more hints here.

EDIT: Okay, so I've downloaded the binary distribution (go1.1.linux-amd64.tar.gz). Quoting from README:

---

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this README). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile:

export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.

---

From this it's clear that you must have not followed properly the above instructions. Fix that and I hope it will work for you then.